Interesting stuff. I wouldn’t mind hearing more metallurgy explained.

Not sure if this was your issue, but the air inside the part can get hot enough to build pressure and push your puddle out when you’re trying to seal it up.

Yeah he said he would fail guys that walked the cup. He thought it made for shallow penetration and lack of fusion between passes. In theory, he makes sense, but I don’t think it actually is applicable in the field. Mostly sounded like he had an opportunity to throw his weight around.

I got that email too. Guess I didn’t even look closely at it. They must think it’s alright lol. I’ll probably stick to 2% lanth and layzr.

I don’t do much aluminum, and when I do, I only have tig. But there’s a lot of good useful info in here. Thanks.

Check out the CMR Fabrications Eco Scoop. I think they’re about a hundred bucks with a pretty decent lens.

I wasn’t sure if practice was allowed, so this is pretty raw lol. If I redid it, I would clean the edges better so it didn’t suck stuff into the puddle, and probably turn my gas up a little.

The coupon is 2x8, not sure on the alloy.

PrimeWeld 225 at 150 amps, about 70% EN, about 85 hertz. The coupon was on a heat sink. CK 17 torch set up with stubby standard hardware, #8 cup, 20 cfh argon, 1/8 tungsten sharpened to a point. 1/8 5356 filler

That’s amazing.